Table 1.
Characteristics of the sample at baseline by trial arm.
|
|
Active website (n=111) | Active website with email (n=113) | Active website with phone (n=110) | Control website (n=111) | Control website with phone (n=113) | F a or χ2 | P | |
| mean (SD) or n (%) |
|
|
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| Characteristic | ||||||||
|
|
Age | 25.7 (3.2) | 25.4 (3.3) | 25.5 (3.1) | 26.0 (3.0) | 25.6 (3.5) | 0.623 | .646 |
|
|
GAD-7d score | 6.8 (3.9) | 6.2 (3.9) | 6.8 (3.6) | 6.9 (3.8) | 6.6 (3.7) | 0.604 | .660 |
|
|
CES-De score | 16.7 (10.1) | 17.7 (10.9) | 16.7 (9.8) | 18.8 (10.6) | 17.3 (8.8) | 0.802 | .524 |
|
|
Anxiety sensitivity | 19.3 (11.0) | 19.9 (11.5) | 17.5 (10.6) | 18.7 (9.9) | 18.8 (9.9) | 0.753 | .556 |
|
|
PSWQf | 40.5 (12.2) | 37.9 (12.5) | 39.5 (11.6) | 40.3 (12.0) | 39.2 (10.8) | 0.835 | .503 |
|
|
AUDITg score | 7.2 (5.1) | 7.2 (5.7) | 6.7 (4.8) | 6.9 (4.7) | 7.0 (5.3) | 0.189 | .944 |
|
|
DORh due to anxiety | 0.6 (1.5) | 0.9 (2.3) | 0.6 (1.6) | 0.6 (1.4) | 0.6 (1.2) | 0.859 | .488 |
|
|
Self-rated healthi | 2.4 (0.9) | 2.5 (0.8) | 2.4 (0.8) | 2.5 (0.9) | 2.5 (0.7) | 0.879 | .476 |
|
|
Childhood adversityj | 1.5 (1.4) | 1.9 (1.5) | 1.8 (1.6) | 1.7 (1.5) | 1.7 (1.5) | 0.919 | .452 |
|
|
Traumatic eventsk | 1.4 (1.5) | 1.6 (1.6) | 1.5 (1.5) | 1.4 (1.5) | 1.6 (1.6) | 0.498 | .737 |
|
|
Positive beliefs Internet therapyl | 5.6 (1.2) | 5.4 (1.3) | 5.4 (1.3) | 5.5 (1.3) | 5.8 (1.3) | 2.064 | .084 |
|
|
Female gender | 92 (82.9%) | 90 (79.6%) | 88 (80.0%) | 89 (80.2%) | 91 (80.5%) | 0.474b | .976 |
|
|
Completed university degree | 37 (33.3%) | 32 (28.6%) | 28 (25.9%) | 36 (32.4%) | 30 (26.8%) | 2.352b | .671 |
|
|
Prefer active conditionm | 67 (60.4%) | 51 (45.1%) | 70 (63.6%) | 60 (54.1%) | 70 (61.9%) | 10.501b | .033c |
| Employment status | 16.297b | .038c | ||||||
|
|
Full-time employment | 69 (62.2%) | 68 (61.3%) | 81 (75.7%) | 65 (59.1%) | 58 (51.8%) |
|
|
|
|
Part-time employment | 30 (27.0%) | 27 (24.3%) | 16 (15.0%) | 34 (30.9%) | 36 (32.1%) |
|
|
|
|
Not in labor force | 12 (10.8%) | 16 (14.4%) | 10 (9.3%) | 11 (10.0%) | 18 (16.1%) |
|
|
a F tests are from one-way analysis of variance (ANOVA) for continuous variables
b χ2 tests for categorical variables
c P<.05
dGAD: Generalized Anxiety Disorder
eCES-D: Center for Epidemiologic Studies Depression Scale
fPSWQ: Penn State Worry Questionnaire
gAUDIT: Alcohol Use Disorders Identification Test
hDOR: Days out of Role
iSelf-rated health assessed on a 5-point scale from 1 (excellent) to 5 (poor)
jChildhood adversity based on aggregate of 6 items assessing paternal/maternal mental health problems and substance use problems, high familial conflict, and parental separation/divorce
kTraumatic life events based on count from list of 14 traumatic events
lPositive beliefs in Internet therapy based on 2 items regarding confidence in learning skills about anxiety and better understanding anxiety using the Internet
mPreference for active condition based on a single item asking which intervention would be preferred